When we think of four-cylinder engines, huge blocks don’t come to mind. Rather units destined to fulfill a functional task and offer relatively modest powers, except in those that are destined to compete or to be very fast, such as sports compact. However, here we will see five of the four-piston engines with the largest displacement ever manufactured.
Porsche 968 Turbo S: 3.0 L
Unit displacement: 747.5 cc
In 1989, Porsche launched a new engine for the 944. With four cylinders, it covered 2,990 cc, one of the largest of its time. Seven years later it was updated with a turbocharger to give rise to the Porsche 968 Turbo S, an exclusive model limited to 16 units developed by Porsche Motorsports of Weissach. It delivered 305 HP at 5,600 rpm and 501 Nm at 3,000 rpm. It reached 285 km / h of top speed and 100 km / h from a standstill in 5.1 seconds.
Pontiac Tempest: 3.2 L
Unit displacement: 795 cc
The first generation of the Pontiac Tempest debuted in 1961, being the base that, three years later, would give rise to the famous Pontiac GTO, considered the first muscle car in history. At the time of its launch, the Tempest could be chosen with a four-cylinder engine and 3,180 cc. It was baptized as “Trophy 4” or “Indy 4” and literally was half of the 6.4-liter V8. It delivered 117 HP at 4,000 rpm and 265 Nm at 2,000 rpm, although it was updated in the coming years to 157 hp.
Ford Model A: 3.3 L
Unit displacement: 821.5 cc
It was in 1927 when the Ford Model A arrived, the replacement for the iconic Model T. Its 3,286 cc water-cooled block was able to deliver 41 HP at 2,200 rpm and 174 Nm from just 1,000 rpm. Its maximum speed was set at a negligible 105 km / h of the time. With four drum brakes (two in the Model T) and a three-speed manual gearbox, the Model A became a worthy successor.
Detroit Diesel Series 50: 8.5 L
Unit displacement: 2,125 cc
This engine does not belong to a specific vehicle, since its birth in 1993 it has propelled numerous buses, semi-trailers, industrial, military and recreational vehicles. The cylinder head of this diesel block was designed by John Deere, and in the post-2000 versions they were updated with a variable turbocharger and an EGR system. It was offered with powers ranging from 253 HP to 325 HP – at 2,100 rpm – and a torque of up to 1,559 Nm at 1,200 rpm.
Fiat S76: 28.3 L
Unit displacement: 7,050.4 cc
The leader of this list without a doubt is the Fiat S76, also known as “the Beast of Turin.” Managed in 1910, its four-cylinder 28,353 cc atmospheric suction engine could deliver 294 HP at 1,100 rpm and 1,876 Nm of torque, enough outside to get a top speed of 225 km / h in two races, which made it the fastest vehicle in 1911.